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使用零宽断言可以匹配后面『是某个模式』,但后面也可能『是行尾』,应该怎么写?
2 replies 2014-09-24 20:01:14 +08:00  | | 1 icedx Sep 24, 2014 via Android r'Nyan|$' 匹配Nyan字符或行尾 |
 | | 2 liberize Sep 24, 2014 刚刚发现 xxx(?=(pattern|$)) 是可以工作的,结帖 |